Hip-to-gable drawings for Bourne Valley semis and end-terraces — building the sloping hipped end up into a flat gable wall to unlock the full width of the roof, drawn to Test Valley Borough Council's guidance, delivered in days and revised free until your decision, with a free approval-odds check first.
Test Valley Borough Council granted 96% of the householder planning decisions it made in its latest published year — 9 points above the 87% England-wide householder average. Bourne Valley contains Hurstbourne Tarrant and Ibthorpe, Upton, Vernham Dean conservation areas (Hurstbourne Tarrant and Ibthorpe designated 1976), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) housing stock sets the design brief on most streets.
Before permission is required, Class B allows 40m³ of added loft volume on a terrace and 50m³ on a semi or detached house, and Class A allows a 3m single-storey rear extension on a terrace or 4m on a detached house. In conservation areas such as Hurstbourne Tarrant and Ibthorpe, Upton and Vernham Dean those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Bourne Valley is determined against an 8-week statutory target.
Hurstbourne Tarrant and Ibthorpe (conservation area designated in 1976), Upton (conservation area designated in 1983), Vernham Dean (conservation area designated in 1983), Faccombe (civil parish within Bourne Valley), Hurstbourne Tarrant (civil parish within Bourne Valley), Linkenholt (civil parish within Bourne Valley), Vernhams Dean (civil parish within Bourne Valley), Enham Alamein (civil parish within Bourne Valley) and Smannell (civil parish within Bourne Valley) — these are the Bourne Valley pockets our drawings cover most. Heritage designations here include Hurstbourne Tarrant and Ibthorpe, Upton and Vernham Dean. Test Valley Borough Council weighs each proposal against the adopted Test Valley local plan and Test Valley Borough Council's design guidance for householder work, where the 1,550 homes here are 23% pre-1900, 12% 1973-1982, 12% 1983-1992, which is what sets the realistic roof and rear-projection options. On roofs the borough is steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and shallow trussed roofs typical of 1970s building, over Victorian and earlier houses (23% of 1,550 homes), 1970s and early-1980s houses (12%) and 1980s estate houses (12%).
What is permitted in Bourne Valley turns on designation first, so that is where we start: Hurstbourne Tarrant and Ibthorpe (conservation area designated in 1976), Upton (conservation area designated in 1983) and Vernham Dean (conservation area designated in 1983). Inside those boundaries permitted development is curtailed and Test Valley Borough Council assesses materials, window detail and roof form against the area's own appraisal, so a scheme that would be waved through two streets away can need a full application here.
Beyond the designated areas, Bourne Valley takes in Faccombe, Hurstbourne Tarrant, Linkenholt, Vernhams Dean, Enham Alamein and Smannell. No Article 4 direction is recorded for Test Valley Borough Council, but Bourne Valley's 3 conservation areas still limit permitted development on those streets.
On stock, Bourne Valley is Victorian and earlier houses (23% of 1,550 homes), 1970s and early-1980s houses (12%) and 1980s estate houses (12%) — which is why steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and shallow trussed roofs typical of 1970s building govern what a loft or rear projection can realistically be. Test Valley Borough Council decided 533 householder applications in the latest published year and granted 96%, with 76% issued inside the eight-week target. We draw to that record rather than to a national average.
The full build-period split for Bourne Valley runs pre-1900 23% (360 homes), 1900-1918 3% (50 homes), 1919-1929 3% (50 homes), 1930-1939 6% (90 homes), 1945-1954 6% (100 homes), 1955-1964 5% (80 homes), 1965-1972 10% (150 homes), 1973-1982 12% (190 homes), 1983-1992 12% (190 homes), 1993-1999 4% (60 homes) and 2000-2008 8% (130 homes). That distribution is why pre-1900 detailing dominates the drawings here, and it is measured from council-tax records rather than assumed from the street name.
Test Valley Borough Council also decides for Blackwater, Harewood, Mid Test, Ampfield & Braishfield, Anna, Bellinger and Charlton & the Pentons, so a decision in Bourne Valley sits inside a wider pattern of decisions we track across the same authority — useful when an officer cites a precedent from the next area over.
Published figures for Bourne Valley and Test Valley Borough Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.
| Measure | Bourne Valley |
|---|---|
| Dwellings recorded | 1,550 |
| Built pre-1900 | 360 (23%) |
| Built 1900-1918 | 50 (3%) |
| Built 1919-1929 | 50 (3%) |
| Built 1930-1939 | 90 (6%) |
| Built 1945-1954 | 100 (6%) |
| Built 1955-1964 | 80 (5%) |
| Built 1965-1972 | 150 (10%) |
| Built 1973-1982 | 190 (12%) |
| Built 1983-1992 | 190 (12%) |
| Built 1993-1999 | 60 (4%) |
| Built 2000-2008 | 130 (8%) |
| Built before 1919 | 26% |
| Built 1919–1939 | 9% |
| Built 1945–2008 | 58% |
| Conservation areas in Bourne Valley | 3 (Hurstbourne Tarrant and Ibthorpe, Upton…) |
| Conservation areas district-wide | 36 |
| Article 4 directions recorded | 0 |
| Householder applications decided | 533 |
| Householder applications granted | 96% |
| Decided within 8 weeks | 76% |
Dwelling stock from VOA council-tax data at 31 March 2025; conservation-area and Article 4 counts from planning.data.gov.uk (MHCLG); decision figures are Test Valley Borough Council's own, from MHCLG live table PS2 for the year to 31 March 2026.
The hip-to-gable is the semi's loft, and Bourne Valley has the stock that needs it — the borough runs to Victorian and earlier houses (23% of 1,550 homes), 1970s and early-1980s houses (12%) and 1980s estate houses (12%), and wherever the roof is hipped it wastes the triangle of space where the slope cuts in at the side. Build that hip up into a gable wall and the loft gains full-height room right across the width, usually with a rear dormer behind it. Test Valley Borough Council judges the scheme against the adopted Test Valley local plan and Test Valley Borough Council's design guidance for householder work, and because the gable is a side elevation it is read against the neighbouring house first.
That neighbour relationship is the drawing's job. We build the gable to the original ridge line, match the brick or render and the verge detail to the host, and where the house is one of a mirrored pair we show the new gable against the neighbour's retained hip so the officer can weigh the balance. Bourne Valley contains Hurstbourne Tarrant and Ibthorpe, Upton, Vernham Dean conservation areas (Hurstbourne Tarrant and Ibthorpe designated 1976), so materials, fenestration and roof form are assessed against the appraisal, and on a paired roof that is precisely the test a hip-to-gable has to pass.
Where Bourne Valley's streets are designated — Hurstbourne Tarrant and Ibthorpe, Upton and Vernham Dean among them — a hip-to-gable is scrutinised hard, because losing a hip changes the roofscape the area is protected for. No Article 4 direction is recorded for Test Valley Borough Council, but Bourne Valley's 3 conservation areas still limit permitted development on those streets. We check the designation before the gable is drawn.
A hip-to-gable in Bourne Valley is not permitted development — extending the roof up and out over the hip takes it past what Class B allows — so it needs a full application to Test Valley Borough Council. These are the points the council weighs:
We draw the new gable to the existing ridge, the verge and materials matched to the host, and the balance with the neighbour's retained hip — the side-elevation relationships Test Valley Borough Council's officers check first — and submit a validation-complete householder application, usually with the rear dormer on the same drawings.
Below is Test Valley Borough Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Test Valley Borough Council granted 96% of its householder applications in the year to 31 March 2026, and Hurstbourne Tarrant and Ibthorpe shapes what is approved here. A hip-to-gable turns on side-elevation bulk and the balance of the pair, so a pack that draws the gable against the neighbour is decided faster and refused less often than a DIY submission.
Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.
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Across Hurstbourne Tarrant and Ibthorpe, Upton and Vernham Dean, the hip-to-gable that goes through is the restrained one: the gable built to the original ridge rather than above it, materials matched so the extended end reads as part of the house, and — on a pair — the new wall sitting comfortably beside the neighbour's hip rather than overwhelming it. On the borough's victorian and earlier houses (23% of 1,550 homes), squaring one or both hips is what makes the whole loft usable, which is why it is nearly always drawn with a rear dormer behind.
The 1,550 homes here are 23% pre-1900, 12% 1973-1982, 12% 1983-1992, which is what sets the realistic roof and rear-projection options. We hold the gable to the ridge, detail the verge and the flank window to sit quietly, and present the gable and dormer as one roof alteration — so Test Valley Borough Council assesses a single coherent change to the roof rather than two competing ones.
We draw hip-to-gable lofts on the semi-detached and end-of-terrace streets across the borough. A few of the neighbourhoods where Bourne Valley hip-to-gables come up most often:
Hip-to-gable loft drawings for Hurstbourne Tarrant and Ibthorpe's conservation area designated in 1976 — ridge-matched, pair-balanced and drawn to Test Valley Borough Council's guidance.
Hip-to-gable loft drawings for Upton's conservation area designated in 1983 — ridge-matched, pair-balanced and drawn to Test Valley Borough Council's guidance.
Hip-to-gable loft drawings for Vernham Dean's conservation area designated in 1983 — ridge-matched, pair-balanced and drawn to Test Valley Borough Council's guidance.
Hip-to-gable loft drawings for Faccombe's civil parish within Bourne Valley — ridge-matched, pair-balanced and drawn to Test Valley Borough Council's guidance.
Hip-to-gable loft drawings for Hurstbourne Tarrant's civil parish within Bourne Valley — ridge-matched, pair-balanced and drawn to Test Valley Borough Council's guidance.
Hip-to-gable loft drawings for Linkenholt's civil parish within Bourne Valley — ridge-matched, pair-balanced and drawn to Test Valley Borough Council's guidance.
A hip-to-gable only applies where the roof is hipped — and what it gains depends on the house. This is how the cases compare.
| Roof / house type | Hip-to-gable route | What it gains | What Test Valley Borough Council checks |
|---|---|---|---|
| Hipped semi-detached | Full application, one gable | Full-width loft on the hipped side | Balance with the paired neighbour |
| Hipped end-terrace | Full application, one gable | Squares off the exposed end | Side elevation and street rhythm |
| Hipped detached | Full application, one or both ends | Loft across the whole roof | Bulk and the wider roofscape |
| Already gabled roof | Not needed — dormer only | Space via a rear dormer instead | Dormer volume and set-back |
In conservation areas such as Hurstbourne Tarrant and Ibthorpe and Upton, the loss of a hip is resisted and a hip-to-gable is assessed on its effect on the protected roofscape.
A fixed process built around how Test Valley Borough Council validates and decides hip-to-gable applications — most drawings are submission-ready within seven days of survey.
Send us your Bourne Valley postcode and whether your roof is hipped one or both ends. We confirm your conservation and Article 4 status and score your odds against live Test Valley Borough Council decisions.
We measure the ridge and eaves, the hip geometry and — on a pair — the neighbour's roof, so the new gable can be drawn to the original ridge and balanced against the adjoining house.
Chartered designers develop the gable and its rear dormer to your brief, drawn to Test Valley Borough Council's roof-alteration guidance with the side elevation and neighbour relationship resolved on the page.
We submit the householder application, manage validation and case-officer queries, and revise the drawings free until Test Valley Borough Council issues its decision.
Yes. A hip-to-gable rebuilds the sloping hipped end of the roof as a vertical gable, and because that extends the roof it falls outside permitted development — so it always needs a full householder application to Test Valley Borough Council, whether or not your street is designated. It is usually submitted together with a rear dormer as a single roof-alteration application. This applies to your Bourne Valley address specifically.
It replaces the roof's sloping hipped end with a flat gable wall built up to the ridge, turning the wasted triangle where the slope cuts in into full-height loft space across the width of the house. Bourne Valley's hipped semis and end-terraces suit it especially well, and it is nearly always paired with a rear dormer to open up the back of the roof too. Test Valley Borough Council is the decision-maker.
Yes, and a matching pair often reads better to Test Valley Borough Council than a single gable on one side, because it keeps the two houses balanced. Where only one owner converts, we draw the new gable carefully against the neighbour's retained hip so the officer can see the pair still works. The balance of the pair is one of the main things the council weighs. This applies to your Bourne Valley address specifically.
Almost always. The gable opens up the side of the roof and a rear dormer opens up the back, and together they make the whole loft usable — so in Bourne Valley the two are typically drawn and submitted as one application to Test Valley Borough Council. Presenting them together means the council assesses a single coherent change to the roof rather than two separate alterations.
Usually, on a semi or end-terrace. The gable is built up off the flank, and the loft steelwork often bears on the party wall, so the Party Wall etc. Act applies and notice must be served before work starts — separately from Test Valley Borough Council's planning decision. We detail the junction on the drawings and flag the notice early so a surveyor can be appointed without delay. This applies to your Bourne Valley address specifically.
We price each Bourne Valley hip-to-gable individually, because the roof geometry and whether it is one gable or two vary house to house, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack — usually gable plus rear dormer — with free revisions until Test Valley Borough Council approves. Call 020 7864 7245 to start.
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